Agricola, Georg
,
De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ...
,
1556
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<
chap
id
="
N10018
">
<
p
id
="
N1291A
"
type
="
main
">
<
s
id
="
N12921
">
<
pb
pagenum
="
121
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xlink:href
="
001/01/131.jpg
"/>
craſſa & lata pedem, fibulis in ſummo coniuncta, in imo diuaricata erigun
<
lb
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tur: eorum ſingulorum inferiora capita in ſingulorum
<
expan
abbr
="
tignorũ
">tignorum</
expan
>
in ſolo ſtra
<
lb
/>
torum formis
<
expan
abbr
="
includũtur
">includuntur</
expan
>
: tigna, quæ humi iacent, longa ſunt pedes quinque,
<
lb
/>
lata ſeſquipedem, craſſa pedem. </
s
>
<
s
id
="
N12937
">Quodque autem tignum erectum cum tigno
<
lb
/>
humi ſtrato connectitur tertio quodam tigno obliquè deſcendente: cuius
<
lb
/>
caput ſuperius includitur in forma tigni erecti: inferius in forma tigni humi
<
lb
/>
iacentis. </
s
>
<
s
id
="
N12940
">Eiuſmodi uerò tignum longum eſt pedes quatuor, craſſum &
<
expan
abbr
="
latũ
">latum</
expan
>
<
lb
/>
pedem: quomodo fit area rotunda, cuius linea dimetiens habet ad quinqua
<
lb
/>
ginta pedes: in eius areæ medio crater altus ad decem pedes foditur, & fiſtu
<
lb
/>
ca ſpiſſatur, aut, ut ſatis habeat firmitatis, contiguis tigillis, per quæ
<
expan
abbr
="
penetrãt
">penetrant</
expan
>
<
lb
/>
pali, ſtabilitur: eorum enim coniunctione terra crateris continetur ut deci
<
lb
/>
dere non poſsit. </
s
>
<
s
id
="
N12955
">In imo crateris
<
expan
abbr
="
tignũ
">tignum</
expan
>
ſternitur longum pedes tres uel qua
<
lb
/>
tuor, craſſum & latum ſeſquipedem: id, ut immobile maneat, in tigillis conti
<
lb
/>
guis eſt incluſum. </
s
>
<
s
id
="
N12960
">In eius medio ferreus eſt catillus, acie temperatus, in quo
<
lb
/>
ferreus axis codax uerſatur: ſimili modo tignum, quod in ſummo ſub fibula
<
lb
/>
in formis duorum tignorum erectorum eſt incluſum, habet catillum
<
expan
abbr
="
ferreũ
">ferreum</
expan
>
<
lb
/>
in quo alter ipſius axis codax ferreus uoluitur: nam quiſque axis metallicus,
<
lb
/>
ut quæque ſemel, ſi res ita ferat, dicam, duos ferreos habet codaces, tanquam
<
lb
/>
clauos, in medio capitum, ad circinum rotundatorum, infixos: eorum pars,
<
lb
/>
quæ in axis caput in figitur tam lata eſt quàm ipſum caput, & craſſa
<
expan
abbr
="
digitũ
">digitum</
expan
>
:
<
lb
/>
quæ extat teres & craſſa palmum, aut craſsior, ſi res hoc poſtulat. </
s
>
<
s
id
="
N12979
">Capita eti
<
lb
/>
am cuiuſque axis metallici circulo ferreo cinguntur & uinciuntur, ut eò firmi
<
lb
/>
us codaces continere poſsint. </
s
>
<
s
id
="
N12980
">Axis
<
expan
abbr
="
autẽ
">autem</
expan
>
huius machinæ, exceptis capitibus,
<
lb
/>
quadrangulus eſt & longus pedes quadraginta, craſſus & latus ſeſquipe
<
lb
/>
dem: in cuius axis formis quæ ſunt ſupra caput inferius, quatuor tignorum
<
lb
/>
obliquè aſcendentium capita incluſa fibulantur: eorundem capita ſuperio
<
lb
/>
ra ſuſtinent duo tigna tranſuerſaria duplicata, item in eorum formis in cluſa. </
s
>
<
s
id
="
N1298F
">
<
lb
/>
Tigna uerò obliquè aſcendentia ſunt longa pedes decem & octo, craſſa pal
<
lb
/>
mos tres, lata quinque. </
s
>
<
s
id
="
N12995
">At tranſuerſaria duplicata ſic ad axem affixa ſunt & in
<
lb
/>
ter ſe clauis ligneis coniuncta, ut non ſeparentur: ea autem longa ſunt pedes
<
lb
/>
quatuor & uiginti. </
s
>
<
s
id
="
N1299C
">Deinde
<
expan
abbr
="
tympanũ
">tympanum</
expan
>
eſt, quod conſtat ex tribus rotis: qua
<
lb
/>
rum media tam à ſuprema quàm ab infima diſtat pedibus ſeptem. </
s
>
<
s
id
="
N129A5
">Eis qua
<
lb
/>
tuor ſunt radij, quos totidem tigilla obliquè aſcendentia ſuſtinent: quorum
<
lb
/>
capita inferiora circum axem fibula coniunguntur: ſingulorum
<
expan
abbr
="
aũt
">aut</
expan
>
<
expan
abbr
="
radiorũ
">radiorum</
expan
>
<
lb
/>
alterum caput in forma axis, alterum in forma curuaturæ incluſum eſt. </
s
>
<
s
id
="
N129B6
">Ex
<
lb
/>
curuaturis infimæ rotæ ad curuaturas mediæ undique
<
expan
abbr
="
pertinẽt
">pertinent</
expan
>
fuſi: ſimiliter
<
lb
/>
ex curuaturis mediæ ad curuaturas ſupremæ: quibus fuſis duo ductarij fu
<
lb
/>
nes inuoluuntur: alter inter infimam rotam & mediam, alter inter
<
expan
abbr
="
mediã
">mediam</
expan
>
&
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lb
/>
ſupremam. </
s
>
<
s
id
="
N129C9
">Hoc ædificium, in metæ figuram, excepta ea parte quandrangu
<
lb
/>
la quæ ſpectat ad puteum formatum, totum ſcandulis contegitur. </
s
>
<
s
id
="
N129CE
">Tum du
<
lb
/>
plicis ordinis ſunt tigna tranſuerſaria utrinque ſtatutis incluſa: utraque longa
<
lb
/>
ſunt pedes decem & octo: ſed ſtatuta craſſa & lata pedem, tranſuerſaria tres
<
lb
/>
palmos. </
s
>
<
s
id
="
N129D7
">Statuta numero ſunt ſedecim, tranſuerſaria octo, ſuper quæ collo
<
lb
/>
cantur duæ trabes latæ pedem, craſſæ tres palmos, excauatæ ad ſemipedis
<
lb
/>
latitudinem, ad quinque digitorum altitudinem: & altera quidem locatur ſu</
s
>
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